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Tunable white light emission from a single-host phosphor Gd2MoO6:Eu3+,Dy3+ for near ultraviolet light-emitting diodes

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Abstract

A series of Eu3+ and Dy3+ singly and doubly doped Gd2MoO6 phosphors were synthesized with solid state reactions. The X-ray powder diffraction analysis of phosphors shows that substitution of Eu3+ and Dy3+ does not change the host structure of phosphors. The absorption spectra measurements show that un-doped Gd2MoO6 can absorb near ultraviolet light without any visible light emission. However, energy absorbed by Gd2MoO6 can be effectively transferred to doped Eu3+ and Dy3+ and makes them emit blue, yellow, and red light, respectively. White light can be obtained by combining blue, yellow, and red emission. The doping of Dy3+ plays a major role for the formation of white light. The introduction of Eu3+ can remarkably decrease the color temperature of the white light emission. The measurement of the temperature-dependent luminescent properties indicates that the phosphors present a good thermal stability. Our investigation indicates that Gd2MoO6:Eu3+,Dy3+ is a potential candidate for white light emitting diodes applications. It also provides a new sight for the achievement of white light emission.

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ACKNOWLEDGMENTS

This work was financially supported by the Natural Science Foundation of Guangdong Province (Nos. S2013040013904).

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  1. School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, 510006, China

    Fuqiang Sun, Rongrong Xie, Li Guan & Canyuan Zhang

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  1. Fuqiang Sun
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Correspondence to Fuqiang Sun.

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Sun, F., Xie, R., Guan, L. et al. Tunable white light emission from a single-host phosphor Gd2MoO6:Eu3+,Dy3+ for near ultraviolet light-emitting diodes. Journal of Materials Research 32, 539–546 (2017). https://doi.org/10.1557/jmr.2016.465

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